Abstract
Based on the structural theory of thermo-economics, a 600 MW unit was taken as an example. An integration system which uses fuel gas heat and solar energy as a heat source for post-combustion carbon capture was proposed. The physical structure sketch and productive structure sketch were drawn and a thermo-economics model and cost model based on the definition of fuel-product were established. The production relation between units was analyzed, and the composition and distribution of the exergy cost and thermo-economic cost of each unit were studied. Additionally, the influence of the fuel price and equipment investment cost of the thermo-economic cost for each product was studied. The results showed that the main factors affecting the unit cost are the fuel exergy cost, component exergy efficiency, and irreversible exergy cost of each unit, and the main factors affecting the thermo-economics cost are the specific irreversible exergy cost and investment exergy cost. The main factors affecting the thermal economics of solar energy collectors and low-pressure economizers are the invested exergy cost, negentropy exergy cost, and irreversible exergy cost of each unit.
Highlights
Climatic change resulting from greenhouse gases has become the most serious air pollution problem facing humanity at present [1]
By applying the structural theory of thermo-economics in the integration system, the formation and distribution of the generation cost can be analyzed in the carbon capture system of a power plant, and the internal reasons of the generation cost increase can be revealed
The condenser is a dissipation device and is used to reduce the increase of entropy produced by the irreversibility in the thermodynamic cycle, so the work substance can return to the initial state of the thermodynamic cycles
Summary
Climatic change resulting from greenhouse gases has become the most serious air pollution problem facing humanity at present [1]. CO2 capture and storage (CCS), resource utilization of CO2 , and renewable energy, as three measures that appeared successively, remain the Gordian techniques for rapidly and effectively reducing CO2 emissions. According to the prediction of the Global CCS Institute in 2018 [3], a 14%. The widespread use of renewable energy is deemed an effective way of reducing CO2 emissions. Solar energy has a wide range of applications at home and abroad in many fields [5]. Carbon capture is deemed the most immediate way of decreasing CO2 emissions
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